North Carolina has recovered $31.8 million from drug maker GlaxoSmithKline as part of the largest health care fraud settlement in U.S. history, Attorney General Roy Cooper said in a news release Thursday. The GSK settlement resolves allegations that the company unlawfully made false representations about drug safety and efficacy, offered kickbacks to doctors, marketed certain drugs for off-label use, and underpaid rebates owed to taxpayer-funded programs including Medicaid.